Owl-nebula-M97-M108-cropped.jpg

M97 and M108 (Owl nebula). I stretched the original Tif using DSS.

Hardware details: 

Camera: Nikon D200

Telescope: SW Evostar 120 with Baader UHC-S filter.

Mount: AZ-EQ6 guided using a ST80 synguider.

Image details:

Lights: 91 x 3min at ISO 800

Darks: 40 x 3min at ISO 800

Lights and darks separated by 1 min intervals

Flats: 40 x 1/40s at ISO 800

Bias: 30 x 1/8000 at ISO 100

Date of capture 22/01/2016

Conditions:

Very clear sky with some light cloud. Seeing was good. The guiding was a bit erratic - possible bad calibration or wind. quite a few subs ended up unguided!